According to Response Through Intervention (RTI), the most critical part of the interventions is Tier One where 80-90 percent of the students are in the regular classroom. The teacher uses baseline data, instruction, monitoring, diagnosing, and feedback with more assessments to see if students are showing growth in critical skills. Tier One is an excellent time for formative assessment. Teachers can observe if the new strategy or modification of a strategy is making a difference in the students’ learning. The constant cycle of instruction, monitor, diagnosis, feedback and assessment in RTI is also the cycle for Formative Assessment. Tier One teachers who use formative assessment have more interventions on a regular basis in the classroom.
My book, Formative Assessment: Responding to Students, is available through Eye-on-Education.
Education with Technology Harry G. Tuttle 
